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Finding the Fourth Proportional to 16,221.76, 24,332.64 and 3,909.76

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Solution

The fourth proportional to 16,221.76, 24,332.64 and 3,909.76 is: 5,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,221.76 : 24,332.64 = 3,909.76 : x
  2. Step 2: Convert to fraction form
    16,221.76/24,332.64 = 3,909.76/x
  3. Step 3: Cross multiply
    16,221.76x = 24,332.64 × 3,909.76
  4. Step 4: Simplify right side
    16,221.76x = 95,134,782.57
  5. Step 5: Solve for x
    x = 95,134,782.57/16,221.76
  6. Step 6: Final answer
    x = 5,864.64

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